How do you write/hack a program/driver/firmware to allow control of rotation and laser duty?

vbimport

#1

I am interested to know if A) there are easy MMC commands to set a certain RPM speed of the CD/DVD drive, and B) if there is a similar command for setting the power or duty cycle of the laser diode.

If these are not able to be done with the MMC commands, then how do I hack the firmware to let me control these functions? Laser focus would also be great, as well as the fine and coarse adjustments for adjusting the laser linearly.


#2

You may like to start reading the MMC ( i recommend v5)
http://www.13thmonkey.org/documentation/SCSI/

Enjoy


#3

was reading that, didn’t look like it had those features/capability… that’s why I am thinking I might need to go more low-level, either hacking firmware, or just replacing the electronics in total.